A high-quality 123/09018 gasket by GX-AFTER, designed for the side cover of the hydraulic suction strainer. This is a crucial sealing element for the oval-shaped service cover located on the hydraulic oil tank of JCB 3CX, 4CX, and MIDI CX backhoe loaders. Its precise dimensions (352x175 mm) and 10 bolt holes ensure a perfect fit, protecting the system from leaks and air ingress.
GX-AFTER is the smart choice for your machine. We provide high-class replacements that combine excellent quality with an attractive price. Each part is carefully verified to ensure full compatibility and reliability you can depend on.
| Brand | Type / Series / Model |
|---|---|
| JCB | Backhoe Loaders: 3CX, 4CX, MIDI CX |
The list above is for reference. It is crucial to verify the dimensions (352x175mm) and hole count (10) on your machine.
This gasket is mounted on the suction strainer cover. When replacing it, be sure to inspect the suction strainer itself. We also recommend HYPTRON hydraulic oils.
A leaking suction strainer gasket is critically dangerous for the hydraulic system. It not only causes oil leaks but, more importantly, allows air (cavitation) and contaminants (water, dust) to be sucked directly into the hydraulic pump. This leads to loud pump operation, loss of performance, and catastrophic pump failure.
The 123/09018 gasket is an oval-shaped seal mounted between the hydraulic oil tank and the side service cover (held by 10 bolts). This cover provides access to the suction filter (strainer), which is the first line of defense for the hydraulic pump. The gasket must provide a perfect seal to prevent oil leaks and air ingress.
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This gasket is located on the hydraulic oil tank (usually on the side or rear), under a large, oval service cover held on by 10 bolts. This cover provides access to the pump's suction filter (strainer).
Yes, this is one of the main causes. A damaged or poorly installed 123/09018 gasket allows the pump to suck in air instead of just oil. Air in the system (cavitation) causes a loud, high-pitched whine and will quickly destroy the pump.
Absolutely not. This is on the suction side of the pump. Using silicone risks pieces of it breaking off and being sucked directly into the hydraulic pump, which can cause immediate failure. You must use the dedicated gasket.
Do you have doubts or need confirmation to avoid costly downtime? Call us. Our experts will help you select the right part to get your equipment back to work as quickly as possible.
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Suitable for JCB 3CX, 4CX backhoe loaders.

















